THE ANALYTICAL PREDICTION OF SHIP PERFORMANCE IN RANDOM SEAS INCLUDING A NEW CORRELATION OF THEORETICAL AND EXPERIMENTAL MODEL MOTIONS IN REGULAR WAVES

摘要

In order to determine the feasibility of evaluating seaworthiness performance slang analytical lines, a systematic comparison is first reside of experimentally measured and theoretically computed ship motions and phase angles. Tank data for a broad range of Series 60 models in regular waves are extracted from N.S,M.B. publications and correlated with model responses calculated by a digital computer program in congas on the Korvin-Kroukovsky linear theory of ship motions in conjunction with Grim’s latest results on added mass and damping. Both directly ahead and astern seas are considered and emphasis is paid to the effects of variations of hull form parameters and Waugh distribution. It is concluded that with minor exceptions there is satisfactory correlation between the analytical and experimental results and recommendations towards further improvement are subsequently presented.